Malicious PDF — malware analysis report

Static analysis result for SHA-256 3650a5120df2c2e6…

MALICIOUS

PDF

81.0 KB Created: 2021-03-26 18:51:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cf4432bf9cf0754711f6d7a9afa2fc22 SHA-1: 20e50cc9c27bf163a1b8b87371219a2ec45cdd78 SHA-256: 3650a5120df2c2e6bd1cbe6bad1d1b8f7dd2925ee052967f4b09138fa4bf2447
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many pointing to disposable domains, indicating a link farm or redirection scheme. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. The embedded URLs and the nature of the link farm point towards an attempt to direct users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://jumiwimov.ru/123?utm_term=tafep+tripartite+guidelines PDF link annotation
    • http://pazadixokumox.sportsontheweb.net/gegubebepole.pdfIn PDF document text
    • https://vazipupabevid.weebly.com/uploads/1/3/4/8/134868359/3111027.pdfIn PDF document text
    • https://cdn.sqhk.co/vopofuxo/xhgihgG/tolemalutedozoxutus.pdfIn PDF document text
    • http://fumuroruzej.medianewsonline.com/nowopax.pdfIn PDF document text
    • http://english-10.site/pemarivofanuxudorivosenuzpu1z.pdfIn PDF document text
    • https://widosutolitidaf.weebly.com/uploads/1/3/4/8/134847614/talilatu_bubuzibalokime_bobim_pazosogiro.pdfIn PDF document text
    • http://lixorajepidil.mygamesonline.org/boy_scout_popcorn_prices_2020.pdfIn PDF document text
    • http://trynutra.shop/boy_scouts_camping_merit_badge_covid7evbj.pdfIn PDF document text
    • http://podipotekoi.ru/walmart_black_friday_11_4_onlinecatpf.pdfIn PDF document text
    • http://ewwe.space/resident_evil_4_ppsspp_zip4qfwy.pdfIn PDF document text
    • https://nozukevanof.weebly.com/uploads/1/3/5/3/135392293/a78b3bafa26.pdfIn PDF document text
    • https://vataripisak.weebly.com/uploads/1/3/4/6/134600115/bolexeliz.pdfIn PDF document text
    • https://givadebar.weebly.com/uploads/1/3/1/4/131437750/kigikomixuwake.pdfIn PDF document text
    • https://cdn.sqhk.co/nixafusoda/kYjLheQ/zodotevufiwev.pdfIn PDF document text
    • https://fenotitejov.weebly.com/uploads/1/3/5/3/135316040/zowen.pdfIn PDF document text
    • http://mapotilij.mygamesonline.org/baby_gap_outlet_online_usa.pdfIn PDF document text
    • https://pazudafodimaje.weebly.com/uploads/1/3/0/7/130776249/748478.pdfIn PDF document text
    • https://vupolape.weebly.com/uploads/1/3/4/7/134749420/6532513.pdfIn PDF document text
    • https://sukaxivex.weebly.com/uploads/1/3/4/8/134895869/bunuvuzasiver.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://3e3188f7-d9e9-48da-9af6-4e6760718ee0.filesusr.com/ugd/4f7562_28dd430c6f684b18967b7333ce4351b3.pdf?index=trueIn PDF document text
    • https://3c3bf0af-c02c-43ee-ab56-a2e3f1f4987d.filesusr.com/ugd/97f7bb_6823f13e30a946e7bb5c494a66d35f30.pdf?index=trueIn PDF document text
    • http://judiserod.onlinewebshop.net/dewej.pdfIn PDF document text
    • https://ad217471-f301-4d07-b05b-71cdb813ff8b.filesusr.com/ugd/4f915f_48976e5befb146e88033dbbd5a2004b7.pdf?index=trueIn PDF document text
    • https://29c5b005-6627-40e3-9da1-9f9d3dbc34dc.filesusr.com/ugd/7ad284_6dab98447cb04e73820a81e2659def5c.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D9 3644 bytes
SHA-256: 980fc75e4f61a0880f680b2af799e00d6b248a6239c5db907285243b0e192b01
font_01_sfnt_off0000fedd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEDD 5160 bytes
SHA-256: 34350d64314b349eb8ca2ce3dbaffd55edee456ccc343614ab70bd749eafbcb2
font_02_sfnt_off0001107d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1107D 10604 bytes
SHA-256: 75ecfdde23dc2a8e65586a8f32760ebaca1478889f83f76b297f8ff20d757248